Film-take-up device.



W. WENDERHOLD.

FILM TAKE-UP DEVICE.

APPLICATION FILED JULY 20.1915.

1,275,636. PatefitedAug.13,1918.

2 SHEETS-SHEET 1.

IN VE N TOR A TTORNEY rm: non-ms PETERS cu. Pncm-urmz. wnsumcnm. o. c.

W. WENDERHOLD. FILM TAKE-UP DEVICE.

APPLICATION FILED JULY 20.1915.

PatentdAug.13,1918.

2 SHEETS+-SHEET 2- M/I/EA/TDR I WW A TTOR/VEY UNITED STATES PA N oFFIo wi LrAivr WENDERHOLD, or NEW YORK, N. Y}, ASSIGNOR To caurarnu'rs ooiaro RATION, A CORPORATION or NEW YORK.

To all whom it may concern:

Be-it known that I, IVILLIAM WENDER- I-IoLn,a citizen of the United. States, residing at New York city, in the county and State of New York, have invented certain new' and useful Improvements in Film- Take-Up Devices, of which the following is a description. Y

This invention relates toa film'winding device, also called a take-up device, and particularly to the mechanism which controls the speed of the take-up reel.

It is well known that on a take-up reel the diameter constantly increases and it is therefore necessary to change the speed of the reel or as is usually done, a friction drive is provided which allows the reel to slip as needed.

The object of my invention is to provide a variable speed drive for a take-up reel, said drive being controlled by the travel of the film before the film reaches the periphery of the reel.

Referring to the drawings,

Figure 1 is a side view showing a reel of film in its container below the partially shown kinetoscope.

Fig. 2 is a side view showing the driving mechanism.

As shown in Fig. 1, the film F is delivered by the lower feed sprocket l in the kinetoscope A past the roller 2 on to the reel 3. Between the reel 3 and the sprocket 1 I mount an auxiliary film guide arm mounted on shaft 5. On this arm I provide two rollers 6 and 6 between which rollers the film passes, the film being pulled to the reel 3 in a straight line. As the reel of film gets larger in diameter the position of this straight line described changes and the film forces the two rollers 6 and 6 to travel since their support 4 is mounted pivotally on the shaft 5. This is the point from which I re ceive the force to operate the variable speed in proportion to the size of the eircmnference of the film already wound.

In Fig. 2 the shaft 5 carries an arm 7 which will move the friction pulley 8 inproportion to the movementof the support t (Fig. 1). ed on shaft 9 and is provided with a key slidably engaging the shaft. This. shaft 9 is mounted in the supports 10 and 11' which are fastened to the general container frame 12.

The pulley 8 is slidablymount by said shaft for driving said-reel.

rIL -TAKE-Ur bEvIcn,

I Specification of Letters Patent. Patented Aflg; 13 I Application filed. July 20, 1915. Serial No. 40,981. i

The friction pulley 8 drives a friction plate 13 which-is mounted on the shaft '14,-

which also carries on the inside of container bevel gear 15drives thebevel gear 1 7 onshaft 9 on which shaft the sliding pulley is .mounted- The bevel gear 15 and pulley 16 are driven by the belt 18 from a pulley 19 mounted, on the lcinetoscope mechanism.

- The shaft 1% is mounted in the frame 12 and 12 and carries the film'reel 3 and the disk 13. It will be seen therefore that the driving speed is varied by the movement of the arms 4 and 7.

The device can be changed without departing from the principle of operation herein described, and the invention chiefly consists in operating the variable speed drive by the change the line of position of the film between the kinetosco-pe and the film reel.

What I claim as my invention is:

1. In a motion picture apparatus or the like, the combination with a film take up reel, friction devices for driving said filmtake up reel, a movable guide for delivering the film to said reel,means for moving said guide a'distance in proportion to the increase of diameter of said reel as the film winds thereupon, and means controlled'by the movement of said guide forcontrolling the position of said friction devices to therer .film take up reel, a pivotally mounted guide arm for the film, the position of one end of said arm being controlled by the position ofsaid film between the apparatus and said take up reel, a lever operated by said guide arm, a variable speed shaft, having its speed controlled by said lever, and means actuated 4. In a motion picture apparatus, a take up reel, apivotally mounted guide arm for the film, a variable speed drive for the film take up reel, a pivoted arm controlled by the movement of said guide arm, a connection between said arm and said variable speed drive, and means actuated by the movement of said arm relative to its connection with said variable speed drive for controlling the speed of said variable speed drive.

5. In a motion picture apparatus, the combination with a take up' reel, a pivotally mounted film guide positioned in the path of travelof the film to said reel, avariable speed drive for said take up reel, means con- .7 trolled by the increase in diameter of said take up reel for shifting said guide, and means controlled by the shifting of said guide for in turn controlling the speed of rotation of said variable speed drive.

therewithrand means controlled by the move--- ment of said arm for controlling the movement of said friction disk.

Signed at New York city, N. Y., this ninth day of July, one thousand nine hundred and fifteen.

WILLIAM WENDERHOLD,

Witnesses:

ROBERT RICHTER, ALBERT H. T. BANZI-IAF.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Intent Washington, D. 0. 

